Torchwood

Big Finish has played with the audio format more than once over the years, and this time does so in the style of a '90s self-help tape providing relaxation and confidence-building to the listener. Michael Palin provides the voice-over, starting out in the soothing style you'd expect, and slowly changing as the plot develops - because there very much is a plot, even if it's one told primarily in second-person present tense.

It's a brilliant conceit, with twists along the way as the increasingly creepy style sucks the listener in. To say anything much about the nature of the plot would be too much of a spoiler, although suffice to say that it fits with what the recording ostensibly is and that there absolutely are some adult elements in it, even aside from what's basically psychological horror. And you really can't beat Michael Palin, whose voice is perfect for this.